digital wah pedal Vivlex Auto Wah Filter Guitar Effects Pedal Mini Stompbox with True Bypass Footswitch for Electric Guitar Bass What is the A and speed/gain Color:X4-Lens-RevoGreen MENS ACCESSORIES

digital wah pedal Vivlex Auto Wah Filter Guitar Effects Pedal Mini Stompbox with True Bypass Footswitch for Electric Guitar Bass What is the A and speed/gain Color:X4-Lens-RevoGreen MENS ACCESSORIES

What is the A and M switch next to the gear shifter for?

Specifications: Size: 130x145x90mm Weight: 300g (without straps) Video Format: NTSC/PAL Supported Channel: 48CH Screen Size: 4.3 inch Screen Resolution: 800x480 Battery: 3.7V, 2000mAh Working Time: About 2 hours (Normal mode)/1 hour 10 mins (Recording mode) Max Charging Current: 1A Antenna Port: RP-SMA (Whip Antenna included) Charging Port: Type-C Card Slot: Micro SD card (Not included), Supports FAT32 system, supports maximum 64GB storage

MENS ACCESSORIES

Color:X4-Lens-RevoGreen

FORK: RADIO "CEPTOR" fork, full crmo, 24mm offset

and speed/gain